BIOL3044 Lecture Notes - Lecture 1: Avena Barbata, Reaction Norm, Scatter Plot
Document Summary
4 reaction norms not all parallel: there is gxe interactions here, genotypes have different plastic responses. Similar optimum to other example smaller optimal trait in environment 1, larger optimal trait in environment 2. The level of plasticity and pattern of plasticity would change as a result of natural selection: blue genotype has the optimum reaction norm across both environments. This was an example of an actual trait in plant that actually responds to the environment. Plants were split up to grow in two blocks" one in august (hotter and drier season), one in october (cooler and wetter: each genotype is grown in each block. Stabilizing selection on rmr: selection wasn"t measured in this experiment, but it makes sense there would be stabilizing selection rmr. If the whole class went to the north pole, each person would have a different plastic response.
